Long-term Land Treatment: A Performance Evaluation

Overland flow (OLF) land treatment has been applied effectively in the United States for the treatment of industrial and municipal wastewaters. Although several overland flow systems in the U.S. have been in operation for many decades, there is little data published regarding the long-term performance of such systems. Knowledge of the effects system aging on effluent quality, soil and groundwater is important to the design and successful operation of overland flow systems. This paper presents information about the long-term efficacy and consistency of OLF treatment performance at a large, industrial facility.